We had been fighting with our old mattress pad for about a year it was the type that has the fitted corners that never fit on our really deep pillow top mattress. So I was looking for a new mattress pad with the elastic attached to each corner. I was hesitant because I didn't want a lot more padding just something to protect the mattress. We got it it fits the mattress and we have had it for about 2 weeks and it stays nicely on the mattress. Problem solved, and the Mattress Topper is nice and comfy!